Improvement in ratchet-wrenches



R. S. SANBORN.

Improvement in Ratghet Wrenches.

No. 122,916. PatentedJahQ23, m2.

M; aif wamw UNITED STATES RUFUS S. SANBORN, OF ROCKFORD, ILLDTOIS.

IMPROVEMENT IN RATCHET-WRENCHES.

Specification forming part of Letters Patent No. 122,916, dated January23, 1872.

. SPECIFICATION. To all whom it may concern:

Be it known that I, BUFUS S. SANBORN, of Rockford, in the county ofWinnebago and State of Illinois, have invented a new and usefulImprovement in Rotating renches and I do hereby declare the following tobe a full and correct description of the same, reference being had tothe accompanying drawing, in which- Figure l is a side view of myimproved wrench complete. Fig. 2 is a end view, showing a pair ofangular jaws. Fig. 3 is a view of the end opposite to that shown in Fig;2, and presenting a pair of parallel jaws. Fig. 4 is an end view of oneof the wrench-heads with the jaws removed. Fig. 5 is a detail view ofone of the parallel jaws and its adj ustingnut. Fig. 6 is a centralsection through the wrench-heads and their hollow shaft on line a m ofFig. 1.

The same letter marks the same part wherever it occurs.

My invention relates to the construction and operation of the doubleratchet-wrench; and consists in the adaptation of double rose-ratchetsto the operation ofwrench-heads fixed to a hollow shaft and providedwith adj ustable j aws, all in the manner hereinafter fully set forth.

To enable others to make and use my improved double rose rotatingwrench, I will proceed to describe its construction and operation,referring to the accompanying drawing, in which- A marks the hollowshaft, Fig. (i, to which the Wrench-heads B B are fixed, or of whichthey, or one of them, may form a part. The inner faces of the heads B Bare provided with ratchet-teeth a a, which receive corresponding teethon the outer faces of the inner ratchetavheels (J C.

' attached the handles or levers D D, by which they are operated. Theconstruction of the wheels 0 U and the mode in which they are heldsteadily in place, while allowed the necessary amount of end play, willbe clearly seen in Fig. 6. In this figure, d 61 mark thimbles,

To these wheels 0 G are attached to and forming part of the wheels 0 C,and serving to give them a longer bearing on the shaft A. Outside ofthese thimbles is a drum or sleeve, 0, which holds them firmly, whileallowing them rotation about shaft A and longitudinal play upon it. Aspiral spring, S, surrounds the sleeve 6, and serves to keep the wheels0 G in contact with the wrenchheads B B, respectively. To thewrench-heads are attached adjustable jaws, which slide upon the threadedbars F F in obedience to the adjustingnuts G G I I, which are attachedto the jaws. The bars to which the adjustable jaws are attached, may bemade part of the heads B B or be removable, as preferred. The jaws maybe made of any desired configuration to adapt them to the work for whichthey are designed. The shaftA is made hollow in order to allow thewrench to be used for turning a nut on or off of a long bolt, the boltpassing through the shaft. In order to center the work both jaws of thewrench at either end of the shaft are made movable.

One end of this wrench it will be observed, turns in a directionopposite to that of the other end, and hence, by reversing theimplement, a nut can be turned in either direction, as may be required.

Having thus fully described my invention, What I claim, and desire tosecure by Letters Patent, is-

1. The double rose-ratchets B O and B G, constructed as described, andoperated by the levers D D, in combination with the hollow shaft A andthe spiral spring S, as and for the purpose specified.

2. In combination with the heads B B and the hollow rota-ting shaft A,the adjustable jaws E E and H H, constructed and operating in the mannerand for the purpose set forth.

The above specification of my said invention signed and witnessed atRockford, this 29th day of November, A. D. 1871.

RUFUS S. SANBORN.

Witnesses:

H. N. BAKER, S. WHEELER.

